Evaporative fluid management canister for wound therapy system

A therapy system, comprising:

• a dressing configured to be sealed over a wound site;
• a negative pressure source configured to draw a negative pressure at the dressing and cause wound exudate to move out of the dressing;
• a canister configured to be placed in fluid communication with the dressing, the canister comprising:
• first and second compartments configured to receive and retain the wound exudate from the dressing;
• and
• an airflow pathway comprising:
• a planar region positioned between the first compartment and the second compartment;
• an inlet extending from a first end of the planar region at an obtuse angle relative to the planar region;
• and
• an outlet at a second end of the planar region;
• and
• an air mover aligned with the inlet and configured to force air through the airflow pathway to facilitate transfer of moisture from the wound exudate out of the first and second components.

A method of manufacturing a canister for a wound therapy device, comprising:

• providing first and second rigid structures formed of a polyurethane resin;
• providing first and second filters formed of a polyether urethane film;
• ultrasonically welding the first rigid structure to the first filter;
• ultrasonically welding the second rigid structure to the second filter;
• and
• ultrasonically welding the first rigid structure to the second rigid structure such that a planar airflow pathway is defined between the first filter and the second filter.